Question

Цену товара сперва снизили на 10 % , а затем новую цену снизили ещё на 30 % . На сколько процентов всего снизили первоначальную цену товара ?

Answer 1

Первоначальная цена -х
Цена после первого снижения 0,9х
Цена после 2 снижения 0,9х*0,7=0,63х
х-100%
(х-0,63х)-у%
у=0,37х*100/х=37% снизили первоначальную цену

Answer 2

Calculating the Total Discount Percentage

To calculate the total discount percentage when the price of a product is first reduced by 10% and then the new price is further reduced by 30%, we can use the following steps:

1. Calculate the first discount: 10% 2. Calculate the second discount: 30% 3. Calculate the total discount percentage: ?

Calculation

Let's calculate the total discount percentage step by step:

1. The first discount is 10%. 2. The second discount is 30%. 3. To calculate the total discount percentage, we can use the formula: ``` Total Discount Percentage = 100% - ((100% - First Discount Percentage) * (100% - Second Discount Percentage) / 100%) ```

Plugging in the values: ``` Total Discount Percentage = 100% - ((100% - 10%) * (100% - 30%) / 100%) = 100% - (90% * 70% / 100%) = 100% - (63%) = 37% ```

Conclusion

The total discount percentage, after the initial 10% reduction followed by a further 30% reduction, is 37%.